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Kernel: Switch Process to InstrusiveList from InlineLinkedList

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This commit is contained in:
Brian Gianforcaro 2021-06-06 14:40:03 -07:00 • committed by Andreas Kling
parent 252e98761a
commit 9fccbde371
3 changed files with 37 additions and 38 deletions
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33
Kernel/Process.cpp
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@ -40,7 +40,7 @@ static void create_signal_trampoline();
RecursiveSpinLock g_processes_lock;
static Atomic<pid_t> next_pid;
READONLY_AFTER_INIT InlineLinkedList<Process>* g_processes;
READONLY_AFTER_INIT Process::List* g_processes;
READONLY_AFTER_INIT String* g_hostname;
READONLY_AFTER_INIT Lock* g_hostname_lock;
READONLY_AFTER_INIT HashMap<String, OwnPtr<Module>>* g_modules;
@ -61,7 +61,7 @@ UNMAP_AFTER_INIT void Process::initialize()
g_modules = new HashMap<String, OwnPtr<Module>>;
next_pid.store(0, AK::MemoryOrder::memory_order_release);
g_processes = new InlineLinkedList<Process>;
g_processes = new Process::List();
g_process_groups = new ProcessGroup::List();
g_hostname = new String("courage");
g_hostname_lock = new Lock;
@ -165,9 +165,9 @@ RefPtr<Process> Process::create_user_process(RefPtr<Thread>& first_thread, const
}
{
ScopedSpinLock lock(g_processes_lock);
g_processes->prepend(process);
process->ref();
ScopedSpinLock lock(g_processes_lock);
g_processes->prepend(*process);
}
error = 0;
return process;
@ -182,9 +182,9 @@ RefPtr<Process> Process::create_kernel_process(RefPtr<Thread>& first_thread, Str
first_thread->tss().esp = FlatPtr(entry_data); // entry function argument is expected to be in tss.esp
if (process->pid() != 0) {
ScopedSpinLock lock(g_processes_lock);
g_processes->prepend(process);
process->ref();
ScopedSpinLock lock(g_processes_lock);
g_processes->prepend(*process);
}
ScopedSpinLock lock(g_scheduler_lock);
@ -270,8 +270,8 @@ Process::~Process()
{
ScopedSpinLock processes_lock(g_processes_lock);
if (prev() || next())
g_processes->remove(this);
if (m_list_node.is_in_list())
g_processes->remove(*this);
}
}
@ -571,17 +571,16 @@ void Process::die()
{
ScopedSpinLock lock(g_processes_lock);
for (auto* process = g_processes->head(); process;) {
auto* next_process = process->next();
if (process->has_tracee_thread(pid())) {
dbgln_if(PROCESS_DEBUG, "Process {} ({}) is attached by {} ({}) which will exit", process->name(), process->pid(), name(), pid());
process->stop_tracing();
auto err = process->send_signal(SIGSTOP, this);
for (auto it = g_processes->begin(); it != g_processes->end();) {
auto& process = *it;
++it;
if (process.has_tracee_thread(pid())) {
dbgln_if(PROCESS_DEBUG, "Process {} ({}) is attached by {} ({}) which will exit", process.name(), process.pid(), name(), pid());
process.stop_tracing();
auto err = process.send_signal(SIGSTOP, this);
if (err.is_error())
dbgln("Failed to send the SIGSTOP signal to {} ({})", process->name(), process->pid());
dbgln("Failed to send the SIGSTOP signal to {} ({})", process.name(), process.pid());
}
process = next_process;
}
}